Fluid-propeller.



A. PAPIN.

FLUID PROPELLER.

APPLICATION FILED APLQ, 190s.

Patented Mar. 11, 1913.

FIG.

STATES PATENT OFFICE.

ALPHONSE new, or LEVALLOIS-PERRET, FRANCE.

FLUID-PROPELLER.

Specification of Letters Patent. P t t d Man 11, 1 913 Application filed Ap'rtl 9, 1906. Serial No. 310,737.

(IodeL) To all whom it may concern:

Be it known that I, ALPHoNsn PAPIN, civil engineer, citizen of France, residin at 48 Rue Voltaire, Levallois-Perret, Seine, France, have invented new and useful Improvements in Fluid-Propellers, of which the following is a specification.

This invention relates to improved fluid propellers capable of instantly reversing the direction of the currents created in the apparatus without changing the direction of rotation of the movable member of the propeller.

Under the invention the movable member of the propeller is constituted by a wheel the blades of which are symmetrical or substantially so in relation to their central plane of rotation and are arranged so that their edges will be turned toward the front in relation to the direction of movement.

When started, a propeller constructed with symmetrical blades according to the principle above indicated, does not at first produce any current on account of the symmetry of the blades. But if by any suitable means whatever a current is initiated in one direction, this current continues to be produced indefinitely in the same direction, until there intervenes a foreign agent either to stop it or to change its direction. It will be understood that if one such apparatus is capable of giving a current in one direction, it is also able to give one in the opposite direction. In order to control the direction of current in such an apparatus it will then only be necessary that the apparatus be provided with a device adapted to initiate a current in the direction desired. This device will be called a reverser. For producing the stoppage of the current and initiate it at once in the opposite direction it suffices to provoke, sufliciently energetic to repel this current and to reverse it; this action may be of exceedingly short duration, provided that it is sufiiciently powerful. Consequently any action of a device capable of momentarily suspending the action that the propeller exercises in the fluid suflices to produce practically both the initiating of a current and the stoppage of the same. As this actipn need not continue it is very easy to apply he force necessary to this reversing of direction, without using complicated mechanisms. For instance the explosion of a capsule at the interior ofthe casing or the action of against the fluid current, an action a jet of compressed air or of a jet of steam or of a jet of water will suffice to initiate the current. It depends on circumstances and recourse will be had, in each case, to the most suitable means according to the use to which the apparatus is intended.

In the annexed drawing, Figures 1 and 2 are end and side views of the movable member of the propeller constructed according to this invention. Fig. 3 is a sec-- tional side view and Fig. 4 an end view of the whole propeller with its casing.

Referring to the drawing, it may be seen that the blades or vanes a of the movable member are secured between two cylindrical surfaces 6 and c. The inner surface I) is connected to the motor shaft of by means of plates 6 or by any suitable means. The crown of blades or movable member thus formed is mounted in a casing f of any suitable shape having two mouths which can serve either as inlet or outlet orifices according to the direction of the current produced. The outer cylindrical surface 0 instead of forming a part of the movable member may be fixed to the casing in the well known manner.

The casing is completed by two ajutages 9 arranged in the path of the blades and parallel with the shaft (Z. These ajutages are adapted to be connected with a steam or, compressed air jet when it is esired to reverse the direction of the current produced. By this means if a jet of steam or of compressed air traverses the vanes which are presented successively, a current will be initiated in one direction or in the opposite direction according to the side on which the steam or compressed air acts. To reverse the current. the jet must always act in an opposite direction to the one of the current. Any other disturbing influence will likewise serve for reversal; among others a suitably directed explosion, an axial displacement of the movable member, a momentary deformation of the casing, etc.-

The propellers which are above described are adapted for all uses for which the different types of compressors or displacers of the turbo-pump or turbo-fan type have heretofore been utilized.

Having now described my invention. what I claim as new and desire to Letters Patent is 1. In a fluid propeller in which the fluid secure by enters axially through one side and is forced out through the other sidegthe arrangement of a movable member'com'prising a rim and blades mounted thereon symmetrically or substantially so in relation to their central planeof rotation and mounted so that their edges are turned toward the front in relation to the direction of movement,

. substantially as described and for the purpose set forth. '2. In a fluid propeller in which the fluid enters axially through one side and is forced out through the other side, the arrangement of a movable member comprising an inner cylindrical surface?) connected to the motor shaft, an outer cylindrical surface '0 and blades amounted between said surfaces symmetrically or substantially so in relation to their central plane of rotation and arranged so that their edges are turned toward the front in relation to" the direction of movement, substantially as described and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALPHONSE PAPIN.

Witnesses:

ANTOINE Lavolx, HANSON C. Goxa. 

